Gear box



FIG. 1 is a left side elevational view of a gear box showing our new design.

FIG. 2 is a right side elevational view thereof.

FIG. 3 is a front end elevational view thereof.

FIG. 4 is a rear end elevational view thereof.

FIG. 5 is a top plan view thereof.

FIG. 6 is a bottom plan view thereof.

FIG. 7 is a front and upper left perspective view thereof; and,

FIG. 8 is a bottom and lower left perspective view thereof. 

The ornamental design for a gear box, as shown and described. 